Bone graft harvester

ABSTRACT

An apparatus and methods are provided for a trephine bone graft harvester for extracting morselized bone from patients. The trephine bone graft harvester includes a bone cutter affixed to an outer hub. The bone cutter comprises a hollow tube having cylindrical wall and a distal cutting edge. A bone graft collector is sheathed within the bone cutter. The bone graft collector includes a distal scoop adjacent to the distal cutting edge of the bone cutter. The distal scoop is configured to move morselized bone away from the distal cutting edge. An inner hub is affixed to the bone graft collector and coupled with the outer hub. The inner hub includes a proximal shank configured to be engaged with a rotary tool suitable for applying torque to the inner hub.

PRIORITY

This application claims the benefit of and priority to U.S. Provisionalapplication, entitled “Bone Graft Harvester,” filed on Jun. 22, 2018 andhaving application Ser. No. 62/688,980, the entirety of said applicationbeing incorporated herein by reference.

FIELD

Embodiments of the present disclosure generally relate to the field ofextracting bone grafts. More specifically, embodiments of the disclosurerelate to devices and methods for harvesting morselized bone from apatient.

BACKGROUND

Grafting generally is a surgical procedure whereby a portion of livingtissue is transplanted from one location on a patient to anotheroperative location on the patent so as to assist with healing followingsurgery. For example, bone grafting is very common in orthopedicsurgery, neuro/spine surgery, and plastic surgery. As will beappreciated, bone generally has an ability to regenerate completely; butin many cases, some sort of scaffold is required to encourage boneadhesion and growth.

In practice, bone grafts may be autograft (bone harvested from thepatient's own body, often from the iliac crest), allograft (cadavericbone usually obtained from a bone bank), as well as synthetic (oftenmade of hydroxyapatite or other naturally occurring and biocompatiblesubstances) with similar mechanical properties to bone. Most bone graftsare expected to be reabsorbed and replaced as the natural bone healsover time.

Autografts are desirable because they are essentially guaranteed to bebiocompatible, osteoconductive, osteoinductive, and osteogenic. Adrawback to harvesting autograft bone, however, is that it requiresharvesting the bone from a separate donor site, thereby requiringadditional surgery. Many patients complain that the pain associated withthe donor site is greater than the pain associated with the primaryoperative site. As such, there is a continuing desire to Applicationdevelop bone harvesting capabilities that limit donor site pain, speedthe harvesting process, and provide adequate bone volume for a varietyof surgical needs.

SUMMARY

An apparatus and methods are provided for a trephine bone graftharvester for extracting morselized bone from a patient. The trephinebone graft harvester comprises a bone graft collector that is sheathedwithin a bone cutter. The bone cutter includes a distal cutting edge anda proximal handle. The distal cutting edge includes sharpened edgesconfigured to morselize bone during rotation of the bone cutter. Adistal scoop comprising the bone graft collector is configured to movethe morselized bone away from the distal cutting edge during extractingbone from an autograft site. The proximal handle includes an outer hubconfigured to engage with an inner hub comprising the bone graftcollector. A proximal shank comprising the bone graft collector isconfigured to engage with a rotary tool suitable for applying torque tothe inner hub. The inner hub and the outer hub are configured tocooperatively convey torque from the rotary tool to the bone graftcollector and the bone cutter.

In an exemplary embodiment, a trephine bone graft harvester forextracting bone from an autograft site comprises: a bone cutter thatincludes a distal cutting edge and a proximal handle; a bone graftcollector that is sheathed within the bone cutter; and a proximal shankcomprising the bone graft collector configured to engage with a rotarytool.

In another exemplary embodiment, the proximal handle includes an outerhub configured to engage with an inner hub comprising the bone graftcollector. In another exemplary embodiment, the outer hub and the innerhub are configured to enable removal of the bone graft collector from aninterior of the bone cutter. In another exemplary embodiment, the bonegraph collector includes pins disposed on opposite sides of the innerhub and configured to be received into slots disposed on opposite sidesof the outer hub. In another exemplary embodiment, the pins and theslots are respectively positioned on the bone graft collector and thebone cutter such that a distal scoop comprising the bone graft collectoris optimally positioned with respect to the distal cutting edge when thebone graft collector is sheathed within the bone cutter.

In another exemplary embodiment, the pins are configured to be retainedwithin the slots by way of snap lock portions comprising levers disposedon opposite sides of the proximal handle. In another exemplaryembodiment, the snap lock portions are biased toward the outer hub byflexible portions that attach the levers to a body comprising theproximal handle. In another exemplary embodiment, the flexible portionsare configured to allow the snap lock portions to pivot the leversslightly as the pins are pushed into the slots during insertion of thebone graft collector into the bone cutter. In another exemplaryembodiment, the snap lock portions are configured to allow the pins tobe removed from the slots upon a practitioner squeezing the leverstogether.

In another exemplary embodiment, the bone cutter comprises a cylindricalwall that is joined with a body comprising the proximal handle. Inanother exemplary embodiment, the distal cutting edge comprises anangled wedge portion of the cylindrical wall and includes sharpenededges configured to morselize bone during rotation of the bone cutter.In another exemplary embodiment, the body is configured to be grasped ina hand. In another exemplary embodiment, the body includes substantiallysimilar levers disposed on opposite sides of the body that areconfigured to engage with and retain an inner hub of the bone graftcollector.

In another exemplary embodiment, the bone graft collector comprises ahollow tube having an open-tube portion that includes a distal scoop. Inanother exemplary embodiment, the open-tube portion is joined with theproximal shank by way of the inner hub. In another exemplary embodiment,the bone graft collector is configured to position the distal scoopadjacent to the distal cutting edge when the bone graft collector issheathed within the bone cutter. In another exemplary embodiment, thedistal scoop is configured to move morselized bone away from the distalcutting edge during extracting bone from the autograft site. In anotherexemplary embodiment, the bone graft collector is configured to retainmorselized bone within the open-tube portion until retrieval by apractitioner.

In an exemplary embodiment, a trephine bone graft harvester comprises: abone cutter including a distal cutting edge; an outer hub affixed to aproximal end of the bone cutter; a bone graft collector disposed withinthe bone cutter; and an inner hub affixed to the bone graft collectorand coupled with the outer hub.

In another exemplary embodiment, the bone cutter comprises a tube-shapedmember having an interior that slidably receives the bone graftcollector. In another exemplary embodiment, the inner hub is configuredto allow removal of the bone graft collector from the interior of thebone cutter, such that morselized bone may be retrieved from the bonegraft collector. In another exemplary embodiment, the bone graftcollector includes a distal scoop configured to retain morselized bonewithin an interior of the bone cutter. In another exemplary embodiment,the distal scoop facilitates retrieval of the morselized bone afterremoval of the bone graft collector from within the bone cutter.

In another exemplary embodiment, the inner hub includes a proximal shankthat is configured to be engaged with a rotary tool suitable forapplying torque to the inner hub. In another exemplary embodiment, theinner hub and the outer hub are configured to cooperatively conveytorque from the rotary tool to the bone graft collector and the bonecutter. In another exemplary embodiment, the distal cutting edge isconfigured to morselize bone during rotation of the bone cutter.

In an exemplary embodiment, a method for a trephine bone graft harvestercomprises: configuring a distal cutting edge of a bone cutter; affixingan outer hub to a proximal end of the bone cutter; disposing a bonegraft collector within an interior of the bone cutter; affixing an innerhub to the bone graft collector; and coupling the inner hub to the outerhub.

In another exemplary embodiment, a coupling includes causing the bonegraft collector and the bone cutter rotate together upon applying torqueto a proximal shank comprising the inner hub. In another exemplaryembodiment, disposing the bone graft collector includes forming a distalscoop to retain morselized bone within an interior of the bone cutter.In another exemplary embodiment, configuring a distal cutting edgeincludes forming an angled wedge portion of the bone cutter to morselizebone upon rotating the bone cutter.

In an exemplary embodiment, trephine bone graft harvester comprises: abone cutter affixed to an outer hub; a bone graft collector sheathedwithin the bone cutter; and an inner hub affixed to the bone graftcollector and coupled with the outer hub.

In another exemplary embodiment, the bone cutter comprises a hollow tubehaving cylindrical wall and a distal cutting edge. In another exemplaryembodiment, the distal cutting edge comprises an angled wedge portion ofthe cylindrical wall having sharpened edges and configured to morselizebone during rotation of the bone cutter. In another exemplaryembodiment, the bone graft collector includes a distal scoop adjacent tothe distal cutting edge and is configured to migrate morselized boneinto an interior of the bone graft collector. In another exemplaryembodiment, the distal scoop retains the morselized bone within theinterior during removal of the bone graft collector from the bonecutter.

In another exemplary embodiment, the inner hub includes a proximal shankthat is configured to be engaged with a rotary tool suitable forapplying torque to the inner hub. In another exemplary embodiment, theinner hub is configured to rotate the bone graft collector and the bonecutter, the inner hub being coupled with the bone cutter by way of theouter hub. In another exemplary embodiment, the bone cutter isconfigured to morselize bone during rotation of the bone cutter. Inanother exemplary embodiment, the inner hub includes a fastener and akey whereby the inner hub may be removably coupled with the outer hub,the key being configured to convey torque from the inner hub to theouter hub. In another exemplary embodiment, the proximal shank isconfigured to be received by a chuck comprising the rotary tool.

In another exemplary embodiment, the bone graft collector includes adistal scoop configured to be disposed adjacent to a distal cutting edgeof the bone cutter, the distal scoop being configured to move morselizedbone away from the distal cutting edge. In another exemplary embodiment,the distal scoop is configured to retain the morselized bone within thebone graft collector, such that the morselized bone may be retrievedupon removing the bone graft collector from an interior of the bonecutter. In another exemplary embodiment, the bone graft collectorincludes a half-tube portion adjacent to the distal scoop, the half-tubeportion being configured to facilitate removal of the morselized boneupon removal of the bone graft collector from an interior of the bonecutter.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings refer to embodiments of the present disclosure in which:

FIG. 1 illustrates an isometric view of an exemplary embodiment of atrephine bone graft harvester, according to the present disclosure;

FIG. 2 illustrates a cross-sectional view of the trephine bone graftharvester of FIG. 1, taken along a line 2-2;

FIG. 3 illustrates an isometric view of an exemplary embodiment of abone cutter comprising a trephine bone graft harvester, according to thepresent disclosure;

FIG. 4 illustrates an isometric view of an exemplary embodiment of abone graft collector comprising a trephine bone graft harvester inaccordance with the present disclosure;

FIG. 5 illustrates an isometric view of an exemplary embodiment of anouter hub comprising a trephine bone graft harvester in accordance withthe present disclosure;

FIG. 6 illustrates an isometric view of an exemplary embodiment of aninner hub comprising a trephine bone graft harvester, according to thepresent disclosure;

FIG. 7 illustrates an exemplary embodiment of a trephine bone graftharvester in a bone drilling configuration, according to the presentdisclosure; and

FIG. 8 illustrates an exploded view of the trephine bone graft harvesterof FIG. 7 in a graft collection configuration according to the presentdisclosure.

While the present disclosure is subject to various modifications andalternative forms, specific embodiments thereof have been shown by wayof example in the drawings and will herein be described in detail. Theinvention should be understood to not be limited to the particular formsdisclosed, but on the contrary, the intention is to cover allmodifications, equivalents, and alternatives falling within the spiritand scope of the present disclosure.

DETAILED DESCRIPTION

In the following description, numerous specific details are set forth inorder to provide a thorough understanding of the present disclosure. Itwill be apparent, however, to one of ordinary skill in the art that theinvention disclosed herein may be practiced without these specificdetails. In other instances, specific numeric references such as “firstbone graft,” may be made. However, the specific numeric reference shouldnot be interpreted as a literal sequential order but rather interpretedthat the “first bone graft” is different than a “second bone graft.”Thus, the specific details set forth are merely exemplary. The specificdetails may be varied from and still be contemplated to be within thespirit and scope of the present disclosure. The term “coupled” isdefined as meaning connected either directly to the component orindirectly to the component through another component. Further, as usedherein, the terms “about,” “approximately,” or “substantially” for anynumerical values or ranges indicate a suitable dimensional tolerancethat allows the part or collection of components to function for itsintended purpose as described herein.

In general, the present disclosure describes an apparatus and methodsfor a trephine bone graft harvester for extracting morselized bone frompatients. The trephine bone graft harvester includes a bone graftcollector sheathed within a bone cutter. The bone cutter comprises ahollow tube having a distal cutting edge and a proximal outer hub. Thebone graft collector includes a distal scoop adjacent to the distalcutting edge of the bone cutter and an inner hub that engages with theouter hub of the bone cutter. The distal scoop is configured to movemorselized bone away from the distal cutting edge. The inner hubincludes a proximal shank configured to be engaged with a rotary toolsuitable for applying torque to the inner hub.

FIG. 1 illustrates an exemplary embodiment of a trephine bone graftharvester 100, according to the present disclosure. The harvester 100 isa generally elongate assembly that includes a bone graft collector 104that is sheathed within a bone cutter 108, as best shown in FIG. 2. Inthe illustrated embodiment of FIG. 1, the bone cutter 108 is affixed toan outer hub 112, while the bone graft collector 104 is affixed to aninner hub 116. As described herein, the outer hub 112 is engaged withthe inner hub 116, such that disengaging of the outer and inner hubs112, 116 enables a practitioner to remove the bone graft collector 104from an interior of the bone cutter 108. The harvester 100 includes adistal cutting edge 120 and a distal scoop 124, as well as a proximalshank 128 that may be engaged with a suitable rotary tool capable ofrotating the harvester 100 for the purpose of extracting bone from anautograft site.

FIG. 3 illustrates an exemplary embodiment of the bone cutter 108comprising the trephine bone graft harvester 100, according to thepresent disclosure. The bone cutter 108 comprises a generally hollowtube having a cylindrical wall 132 that includes a proximal portion 136and the distal cutting edge 120. The distal cutting edge 120 comprisesan angled wedge portion of the cylindrical wall 132 and includessharpened edges 140 that are configured to morselize bone duringrotation of the bone cutter 108. The proximal portion 136 comprises arelatively thicker portion of the cylindrical wall 132 and is configuredto be affixedly received into a distal opening 144 (see FIG. 5) of theouter hub 112, as discussed herein. The proximal portion 136 includes akeyed opening 148 that facilitates mechanically affixing the bone cutter108 to the outer hub 112, such as by way of a key 152 as shown in FIG.2.

FIG. 4 illustrates an exemplary embodiment of the bone graft collector104 comprising the trephine bone graft harvester 100 in accordance withthe present disclosure. The bone graft collector 104 comprises agenerally hollow tube having a proximal portion 156 and an open-tubeportion 160 that includes the distal scoop 124. The proximal portion 156is configured to be affixed within a central opening 164 disposed in theinner hub 116, as shown in FIG. 2. In the embodiment illustrated in FIG.4, the proximal portion 156 includes a keyed opening 168 that isconfigured to receive a lock pin 166 comprising the inner hub 116, asshown in FIG. 2. As will be appreciated, inserting the lock pin 166 intothe keyed opening 168 affixes the bone graft collector 104 and the innerhub 116.

With continuing reference to FIG. 4, the bone graft collector 104 isconfigured to position the distal scoop 124 adjacent to the distalcutting edge 120. The distal scoop 124 is configured to move morselizedbone away from the distal cutting edge 120 during extracting bone from apatient. Further, the distal scoop 124 is configured to retain themorselized bone within the bone graft collector 104, such that themorselized bone may be retrieved upon removing the bone graft collector104 from the interior of the bone cutter 108. In the embodimentillustrated in FIG. 4, the open-tube portion 160 adjacent to the distalscoop 124 facilitates retrieving the morselized bone upon removal of thebone graft collector 104 from the interior of the bone cutter 108.

FIGS. 5-6 respectively illustrate exemplary embodiments of the outer hub112 and the inner hub 116 comprising the trephine bone graft harvester100 in accordance with the present disclosure. The outer hub 112comprises a cylindrical member 176 that includes a proximal opening 180and the distal opening 144. As mentioned above, the distal opening 144is configured to receive the proximal portion 136 of the bone cutter108. Although not shown in FIG. 5, the distal opening 144 preferablyincludes a key that is received by the keyed opening 148 (see FIG. 3) soas to mechanically fixate the bone cutter 108 to the outer hub 112.

With continuing reference to FIGS. 5-6, the proximal opening 180 isconfigured to slidably receive a distal portion 184 of the inner hub116. The proximal opening 180 includes a keyed opening 188 that receivesa keyed portion 172 of the inner hub 116. The outer hub 112 includes anopening 192 and an actuator 196 disposed in the side of the cylindricalmember 176. The opening 192 is configured to receive a flexibleprotrusion 200 disposed on the inner hub 116 whereby the outer hub 112and the inner hub 116 may be removably locked together. The actuator 196is configured to enable a practitioner to remove the flexible protrusion200 from the opening 192, thereby allowing the practitioner to disengagethe outer and inner hubs 112, 116.

As will be appreciated, engaging the keyed portion 172 within the keyedopening 188 effectively fixates the outer hub 112 to the inner hub 116,such that torque applied to the proximal shank 128 is conveyed to boththe outer hub 112 and the inner hub 116. In some embodiments, theproximal shank 128 is configured to be received by a chuck comprising asuitable rotary tool. As such, the rotary tool may be engagedly coupledwith the proximal shank 128 to rotate both the bone cutter 108 and thebone graft collector 104 for the purpose of extracting bone from apatient. Once a desired quantity of morselized bone has been extracted,the actuator 196 may be used to disengage the outer and inner hubs 112,116 and allow the bone graft collector 104 to be removed from theinterior of the bone cutter 108. As described hereinabove, removal ofthe bone graft collector 104 from the bone cutter 108 reveals theopen-tube portion 160 and allows for retrieval of the extracted quantityof morselized bone.

FIGS. 7-8 illustrate an exemplary embodiment of a trephine bone graftharvester 220, according to the present disclosure. The harvester 220 isa generally elongate assembly that includes a bone graft collector 224that is sheathed within a bone cutter 228, as best shown in FIG. 8. Thebone cutter 228 includes a proximal handle 232 configured to facilitatea practitioner grasping the harvester 220 during extracting bone. Thehandle 232 includes an outer hub 236 that engages with an inner hub 240comprising the bone graft collector 224. As described herein,disengaging the outer and inner hubs 236, 240 enables the practitionerto remove the bone graft collector 224 from an interior of the bonecutter 228. The harvester 220 includes a distal cutting edge 244 and adistal scoop 248, as well as a proximal shank 252 that may be engagedwith a suitable rotary tool capable of rotating the harvester 220 forthe purpose of extracting bone from an autograft site.

As best shown in FIG. 8, the bone cutter 228 comprises a generallyhollow tube having a cylindrical wall 256 that is joined with a proximalbody 260. The cylindrical wall 256 includes a distal cutting edge 264that comprises an angled wedge portion of the cylindrical wall 256 andincludes sharpened edges 268 configured to morselize bone duringrotation of the bone cutter 228. The body 260 generally comprises aportion of the handle 232 that is configured to be grasped in a hand ofthe practitioner during operation of the harvester 220. As describedherein, the body 260 includes substantially similar levers 272 disposedon opposite sides of the body 260 that are configured to engage with theinner hub 240 of the bone graft collector 224.

With continuing reference to FIG. 8, the bone graft collector 224comprises a generally hollow tube having an open-tube portion 276 thatincludes the distal scoop 248. The open-tube portion 276 is joined withthe proximal shank 252 by way of the inner hub 240. The bone graftcollector 224 is configured to position the distal scoop 248 adjacent tothe distal cutting edge 244 when the bone graft collector 224 issheathed within the bone cutter 228. The distal scoop 248 is configuredto move morselized bone away from the distal cutting edge 244 duringextracting bone from a patient, as well as retain the morselized bonewithin the bone graft collector 104 until retrieval by the practitioner.As will be appreciated, the morselized bone may be retrieved uponremoving the bone graft collector 224 from the interior of the bonecutter 228 to expose the morselized bone within the open-tube portion276 adjacent to the distal scoop 248.

As shown in FIG. 8, the bone graph collector 224 includes pins 280 thatare disposed on opposite sides of the inner hub 240. The pins 280 areconfigured to be received into slots 284 disposed on opposite sides ofthe outer hub 236 of the bone cutter 228. The pins 280 and the slots 284are respectively positioned on the bone graft collector 224 and the bonecutter 228 such that the distal scoop 248 is optimally positioned withrespect to the distal cutting edge 244 when the bone graft collector 224is sheathed within the bone cutter 228 as shown in FIG. 7. The pins 280are configured to be retained within the slots 284 by way of a snap lockportion 288 comprising each of the levers 272, as shown in FIG. 7. Thesnap lock portions 288 are biased toward the outer hub 236 by flexibleportions 292 that attach the levers 272 to the body 260. The flexibleportions 292 allow the snap lock portions 288 to pivot the levers 272slightly as the pins 280 are pushed into the slots 284 during insertionof the bone graft collector 224 into the bone cutter 228. As will berecognized, the snap lock portions 288 allow the pins 280 to be removedfrom the slots 284 upon the practitioner squeezing the levers 272together.

Methods for a trephine bone graft harvester 100 include, in someembodiments, configuring a distal cutting edge 120 of a bone cutter 108,affixing an outer hub 112 to a proximal end of the bone cutter 108,disposing a bone graft collector 104 within an interior of the bonecutter 108, affixing an inner hub 116 to the bone graft collector 104,and coupling the inner hub 116 to the outer hub 112.

In some embodiments, methods for a trephine bone graft harvester 100include coupling an inner hub 116 to an outer hub 112. In someembodiments, coupling the inner hub 116 to the outer hub 112 furtherincludes causing the bone graft collector 104 and the bone cutter 104 torotate together upon applying torque to a proximal shank 128 comprisingthe inner hub 116.

In some embodiments, methods for a trephine bone graft harvester 100include disposing a bone graft collector 104 within an interior of thebone cutter 108. The methods may further include, in some embodiments,forming a distal scoop 124 to retain morselized bone within an interiorof the bone cutter 108.

In some embodiments, methods for a trephine bone graft harvester 100include configuring a distal cutting edge 120 of a bone cutter 108.Further, in some embodiments, the methods for configuring the distalcutting edge 120 may include forming an angled wedge portion of the bonecutter 108 having sharpened edges 140 to morselize bone upon rotatingthe bone cutter 108.

While the invention has been described in terms of particular variationsand illustrative figures, those of ordinary skill in the art willrecognize that the invention is not limited to the variations or figuresdescribed. In addition, where methods and steps described above indicatecertain events occurring in certain order, those of ordinary skill inthe art will recognize that the ordering of certain steps may bemodified and that such modifications are in accordance with thevariations of the invention. Additionally, certain of the steps may beperformed concurrently in a parallel process when possible, as well asperformed sequentially as described above. To the extent there arevariations of the invention, which are within the spirit of thedisclosure or equivalent to the inventions found in the claims, it isthe intent that this patent will cover those variations as well.Therefore, the present disclosure is to be understood as not limited bythe specific embodiments described herein, but only by scope of theappended claims.

What is claimed is:
 1. A bone graft harvester for extracting morselizedbone from an autograft site, the harvester comprising: a bone cutterthat includes a distal cutting edge and a proximal handle; a bone graftcollector that is sheathed within the bone cutter; and a proximal shankcomprising the bone graft collector configured to engage with a rotarytool; an inner hub affixed to the bone graft collector; an outer hubconfigured to engage with the inner hub comprising the bone graftcollector, the outer hub comprising a cylindrical member, wherein anactuator is disposed in a side of the cylindrical member; and anopen-tube portion comprising a distal scoop, the distal scoop configuredto retain the morselized bone within the bone graft collector, such thatthe morselized bone may be retrieved upon removing the bone graftcollector from an interior of the bone cutter.
 2. The harvester of claim1, wherein the outer hub and the inner hub are configured to enableremoval of the bone graft collector from the interior of the bonecutter.
 3. The harvester of claim 1, wherein the bone graft collectorincludes pins disposed on opposite sides of the inner hub and configuredto be received into slots disposed on opposite sides of the outer hub.4. The harvester of claim 3, wherein the pins and the slots arerespectively positioned on the bone graft collector and the bone cuttersuch that the distal scoop comprising the bone graft collector isoptimally positioned with respect to the distal cutting edge when thebone graft collector is sheathed within the bone cutter.
 5. Theharvester of claim 3, wherein the pins are configured to be retainedwithin the slots by way of snap lock portions comprising levers disposedon opposite sides of the proximal handle.
 6. The harvester of claim 1,wherein the bone cutter comprises a cylindrical wall that is joined witha body comprising the proximal handle.
 7. The harvester of claim 6,wherein the distal cutting edge comprises an angled wedge portion of thecylindrical wall and includes sharpened edges configured to morselizebone during rotation of the bone cutter.
 8. The harvester of claim 1,wherein the open-tube portion is joined with the proximal shank by wayof the inner hub.
 9. The harvester of claim 1, wherein the distal scoopis configured to move the morselized bone away from the distal cuttingedge during extracting bone from the autograft site.
 10. A bone graftharvester, the harvester comprising: a bone cutter including a distalcutting edge; an outer hub affixed to a proximal end of the bone cutter;a bone graft collector disposed within the bone cutter; and an inner hubaffixed to the bone graft collector; the outer hub configured to engagewith the inner hub, the outer hub comprising a cylindrical member,wherein an actuator is disposed in a side of the cylindrical member;wherein an open-tube portion comprises a distal scoop, the distal scoopconfigured to retain morselized bone within the bone graft collector.11. The harvester of claim 10, wherein the inner hub is configured toallow removal of the bone graft collector from an interior of the bonecutter, such that the morselized bone may be retrieved from the bonegraft collector.
 12. The harvester of claim 10, wherein the distal scoopis configured to retain the morselized bone within an interior of thebone cutter, the distal scoop facilitating retrieval of the morselizedbone after removal of the bone graft collector from within the bonecutter.
 13. The harvester of claim 10, wherein the inner hub includes aproximal shank that is configured to be engaged with a rotary toolsuitable for applying torque to the inner hub, and wherein the inner huband the outer hub are configured to cooperatively convey torque from therotary tool to the bone graft collector and the bone cutter.
 14. Theharvester of claim 13, wherein the distal cutting edge is configured tomorselize bone during rotation of the bone cutter.